:root{--bg: #f4f6f9;--surface: #ffffff;--surface-2: #f3f5f8;--surface-3: #e8edf3;--border: #e2e8f0;--text: #0f172a;--text-dim: #64748b;--accent: #2563eb;--accent-dim: #dbeafe;--good: #15803d;--warn: #b45309;--bad: #dc2626;--shadow: 0 1px 2px rgba(15, 23, 42, .04), 0 10px 28px rgba(15, 23, 42, .06);--radius: 10px;color-scheme:light}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);font-size:14px}a{color:var(--accent);text-decoration:none}.app-shell{display:flex;min-height:100vh}.sidebar{width:248px;flex-shrink:0;background:var(--surface);border-right:1px solid var(--border);padding:16px 12px;display:flex;flex-direction:column;gap:2px}.sidebar .brand{font-weight:700;font-size:16px;letter-spacing:-.02em;padding:8px 10px 16px}.nav-section{font-size:11px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--text-dim);padding:12px 10px 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